Riders

Riders are much like the wandering villager, they are villagers riding horses, mules, or donkeys, they can trade items such as seeds, leather, webs, bonemeal, arrows, rare potions, and some can trade you a totem of undying but it would very expensive, it would also trade other rare items. If you throw down an item around the rider he will pick it up, you can also kill the villager and take what he is riding